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Commit 8a28af7f authored by Michal Simek's avatar Michal Simek Committed by Greg Kroah-Hartman
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serial: Add CONSOLE_POLL support for uartlite 



CONSOLE_POLL support for uartlite enables
KGDB debugging over serial line.

Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
Signed-off-by: default avatarJason Wessel <jason.wessel@windriver.com>
Acked-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent a9589811

drivers/serial/uartlite.c

+25 −1
Original line number Original line Diff line number Diff line
@@ -322,6 +322,26 @@ static int ulite_verify_port(struct uart_port *port, struct serial_struct *ser) 
	return -EINVAL;

	return -EINVAL;

}

}





#ifdef CONFIG_CONSOLE_POLL

static int ulite_get_poll_char(struct uart_port *port)

{

	if (!(ioread32be(port->membase + ULITE_STATUS)

						& ULITE_STATUS_RXVALID))

		return NO_POLL_CHAR;



	return ioread32be(port->membase + ULITE_RX);

}



static void ulite_put_poll_char(struct uart_port *port, unsigned char ch)

{

	while (ioread32be(port->membase + ULITE_STATUS) & ULITE_STATUS_TXFULL)

		cpu_relax();



	/* write char to device */

	iowrite32be(ch, port->membase + ULITE_TX);

}

#endif



static struct uart_ops ulite_ops = {

static struct uart_ops ulite_ops = {

	.tx_empty	= ulite_tx_empty,

	.tx_empty	= ulite_tx_empty,

	.set_mctrl	= ulite_set_mctrl,

	.set_mctrl	= ulite_set_mctrl,
@@ -338,7 +358,11 @@ static struct uart_ops ulite_ops = { 
	.release_port	= ulite_release_port,

	.release_port	= ulite_release_port,

	.request_port	= ulite_request_port,

	.request_port	= ulite_request_port,

	.config_port	= ulite_config_port,

	.config_port	= ulite_config_port,

	.verify_port	= ulite_verify_port

	.verify_port	= ulite_verify_port,

#ifdef CONFIG_CONSOLE_POLL

	.poll_get_char	= ulite_get_poll_char,

	.poll_put_char	= ulite_put_poll_char,

#endif

};

};





/* ---------------------------------------------------------------------

/* ---------------------------------------------------------------------